JP2893841B2 - Cooker - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a cooking device such as an induction cooking device.

2. Description of the Related Art Conventionally, in a cooking device such as an induction cooking device, a cooking device with a temperature control device that detects the temperature of a food and cooks the output is considered in the following two methods. Had been. That is, a temperature detection device (sensor) is brought into contact with the bottom portion of the cooking container in which the food is placed, the temperature of the cooking container is measured, and the heating power is adjusted according to the output of the sensor. Insert the sensor directly into the food itself to directly detect the temperature of the food,
The heating power was adjusted according to the output of this sensor.

Problems to be Solved by the Invention Each of the above-described conventional configurations has disadvantages. That is, when the detection is performed at the bottom of the pot of the cooking vessel, there is a drawback that the temperature detection accuracy varies depending on the material and the shape of the cooking vessel. In the case of having a cooking plate, the sensor itself does not directly contact the cooking vessel, so that the detection accuracy is limited.

Further, in the second method of directly inserting the sensor into the food in the cooking device, there is a possibility that the predetermined accuracy may not be obtained unless the sensor is always held at a fixed position in the food. . For example, in tempura dishes,
If the amount of oil decreases and part of the sensor comes off the oil level or the sensor itself comes off the cooking vessel, the output of the sensor will not indicate the temperature of the food. In such a situation, the temperature of the sensor is kept lower than the actual oil temperature, heating continues even if the oil temperature rises, eventually leading to ignition, causing a dangerous situation such as a fire This causes a problem. Therefore, there is a problem regardless of which temperature detection method is adopted.

An object of the present invention is to solve the above two disadvantages and to provide a cooking device having a safe and highly accurate temperature control function.

Means for Solving the Problems In order to achieve the above object, the present invention provides a heating means for heating a cooking container from below, and a first temperature for directly detecting the temperature of the food in the cooking container. Detecting means, a second temperature detecting means provided on the back side of the cooking plate on which the cooking vessel is placed, and the heat generation according to detection outputs of the first temperature detecting means and the second temperature detecting means. Temperature adjusting means for adjusting the output of the means, when the output of either the first temperature detecting means or the second temperature detecting means reaches a predetermined set value set by the temperature adjusting means,
A heating cooker that changes the output of the heating means.

Further, in addition to the above configuration, the first temperature detecting means is a heating cooker having a shape inserted into an installation hole provided in a side portion of the cooking container.

Action The present invention, by the configuration of the above first problem solving means,
Since the temperature inside the cooking vessel can be directly detected, the temperature accuracy can be improved, and even if the sensor in the cooking vessel is displaced from the food or is displaced from the cooking vessel, the second detecting device is used. By detecting the detection output, it is possible to prevent the cooked food from rising above a certain temperature, so that it is possible to prevent the ignition of oil during tempura cooking or the like.

Further, according to the configuration of the second problem solving means, the temperature of the food is constantly detected from the side and bottom portions of the cooking container, so that compared to the temperature adjustment by the conventional method, it is similar to the first solution. It can perform safe and highly accurate temperature control. That is, the side portion is farther from the heat source than the bottom portion and is closer to the food, so that the temperature of the food can be detected more accurately. Similarly, it can be performed with high accuracy, and in the event of danger such as oil ignition, the temperature of the cooking vessel is constantly detected on the side and the lower part, so that it is more secure. Also, in the first problem solving means, since the sensor was inserted inside the food,
In some cases, the food was in direct contact with the sensor and the temperature of the sensor fluctuated up and down, resulting in excessive output fluctuations. Therefore, it is possible to easily input ingredients for cooking.

Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

In the figure, a cooking vessel 1 is placed on a cooking plate 2 made of ceramic or the like, and a heat source 4 made up of an induction heating coil 3 and the like is placed below the cooking plate 2. Inside the cooking container 1, a first temperature detecting means 6 having a built-in temperature detecting element such as a thermistor 5 is attached, and is inserted into a cooking object 7 such as oil. On the other hand, a second temperature detecting means 9 similarly constituted by a temperature detecting element such as a thermistor 8 is closely attached to a lower portion of the cooking plate 2, and
Temperature is detected indirectly. Here, the second temperature detecting means 9 may be configured to protrude from the surface of the cooking plate 2 and directly contact the bottom surface 10 of the cooking vessel 1.

The first temperature detecting means 6 is detachably connected by a connecting portion 12 provided at a rear portion of the cooker upper main body 11. In the lower part 13 of the cooking device, a drive circuit 14 for supplying a high-frequency current to the induction heating coil 3 constituting the heat source 4 and detections from the first temperature detecting means 6 and the second temperature detecting means 9 are performed. Temperature control means 1 for controlling the current to the heat source 4 according to the output is provided.

In the above configuration, the operation of the temperature adjustment according to the present invention will be described with reference to FIGS. FIG. 3 shows the relationship between the temperature detected by each temperature detecting means and the temperature of a cooking product such as oil temperature. Reference numeral 17 indicates a detected temperature of the first detecting means, 18 indicates a detected temperature of the second temperature detecting means, 19 indicates an oil temperature, and 20 indicates a set temperature.

When a high-frequency current is supplied from the drive circuit 14 to the induction heating coil 3, magnetic lines of force are generated on the cooking plate 2 to heat the cooking vessel 1 and raise the temperature of the food 7 inside. Here, the temperature of the first temperature detecting means 6, the second temperature detecting means 9 and the temperature of the thermistors 5, 8 also rise with the rise of the temperature of the food or the cooking vessel, and the detection output thereof is set to a preset value. If the value (set temperature 20) is exceeded, heating is stopped or the output is reduced. When the first temperature detecting means 6 is normally held in the food 7, the detected temperature 17 of the first temperature detecting means 6 first reaches the set temperature 20 and changes the output. The accuracy of the temperature adjustment is more accurate than the indirect detection by the second temperature detecting means 9. (A region) However, if the amount of oil or the like is extremely reduced or the first temperature detecting means 6 comes off from the cooking vessel 1, the output of the detected temperature 17 of the first temperature detecting means 6 becomes oil. Does not respond to the temperature rise, and the oil temperature 19 does not exceed the set temperature 20 even if the oil temperature 19 rises. (B region) However, according to the configuration of the embodiment of the present invention, the second temperature detecting means 9
The detection output also operates in parallel while the cooker is operating,
In addition, since the second temperature detecting means 9 detects the temperature of the bottom surface portion 10 of the cooking vessel 1, it changes according to the temperature of the cooking vessel 1 even when the amount of oil is reduced, and normal operation is achieved. To continue, heating can be stopped before oil ignition occurs. (B region) Therefore, as compared with the conventional method, it is possible to prevent danger such as oil ignition while ensuring the temperature accuracy. Also, depending on the type of dish, the sensor 5
When the first detecting means 6 having the above-mentioned structure cannot be inserted into the food 1, for example, the food is always thrown in, for example, with a pot, and the first detecting means 6 having the sensor 5 makes it difficult to cook. In the case of (1), the second temperature detecting means 9 on the bottom portion 10 of the cooking container 1 operates, so that the first temperature detecting means 6 can be removed, and the usability during cooking can be improved.

Next, a second embodiment will be described. In FIG. 5, the first temperature detecting means 6 is fixed to the side surface 21 of the cooking vessel 1, and the configuration of the first embodiment detects the temperature of the food 7 itself. The temperature of the side surface of the cooking container 1 is detected. Second temperature detecting means 9
Is fixed to the lower portion of the cooking plate 2 placed on the bottom surface portion 10 of the cooking vessel 1 as in the first embodiment. Other configurations are the same as those of the first embodiment.

 The operation in the above configuration will be described.

In the second embodiment, by providing independent detection means on the side portion 21 and the bottom portion 10 of the cooking container, the temperature of the food is constantly detected, so that compared to the temperature control by the conventional method, As in the first embodiment, safe and highly accurate temperature adjustment can be performed. That is, since the side portion 21 is farther from the heat source 4 and closer to the food 7 than the bottom portion 10, the temperature of the food 7 can be detected more accurately. Can be higher. In the event of danger such as oil ignition, the temperature of the cooking vessel is constantly detected on the side and bottom, and in the first embodiment, since the sensor is inserted inside the cooking product, the cooking product 7 is detected by the sensor 5. The temperature of the sensor constantly fluctuates up and down due to excessive direct contact with the first temperature detecting means 6 having Since there is no temperature detecting means 6,
A stable temperature control can be performed without such a phenomenon. In addition, it is possible to easily input the ingredients of the food 7 and to improve the usability.

Effects of the Invention As is clear from the above embodiments, according to the present invention, the output of one of the first temperature detecting means and the second temperature detecting means is set to a predetermined set value set by the temperature adjusting means. When the temperature has reached, the temperature inside the cooking vessel can be directly detected by changing the output of the heating means, so that the temperature accuracy can be increased and the temperature detection means (sensor) inside the cooking vessel can Even if the position is displaced or displaced from the inside of the cooking container, the detection output of the second temperature detecting means can prevent the food from rising above a certain temperature. For this reason, it is possible to prevent danger such as ignition of oil at the time of cooking tempura or the like, and to provide a safe and high-precision temperature control function, but to provide a heating cooker.

As a second means for solving the problem, the first temperature detecting means for detecting the temperature of the food is brought into contact with the side portion of the cooking vessel to detect the temperature of the food, and the first temperature detecting means is provided on the bottom of the cooking vessel. Directly or indirectly contacting the two temperature detecting means, by adjusting the heating power or output according to the detection output of the first and second temperature detecting means, the side and bottom of the cooking vessel Since the temperature of the food is constantly detected from the two directions, safe and highly accurate temperature adjustment can be performed as compared with the conventional temperature adjustment.

In addition, compared to the temperature control by the first problem solving means, since the sensor is not inserted into the cooking device, it is possible to prevent the food from directly contacting the sensor and prevent output fluctuation from becoming excessive, In addition, it is possible to easily supply materials, and to improve the usability, which is an effect that cannot be realized by a conventional heating cooker.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a heating cooker according to a first embodiment of the present invention, FIG. 2 is a perspective view of the same, FIG. 3 is a characteristic diagram showing characteristics of a detected temperature in the first embodiment, FIG. FIG. 4 is a sectional view showing the second embodiment. 1 cooking container, 4 heat source, 6 first temperature detecting means, 7 food, 9 second temperature detecting means, 15
… Temperature control means, 21… Side part.

Continuation of the front page (72) Inventor Kazuichi Okada 1006 Kazuma Kadoma, Kazuma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-62-254389 (JP, A) (58) Fields investigated ( Int.Cl. ⁶ , DB name) H05B 6/12

Claims (2)

(57) [Claims] 1. A heating means for heating a cooking container from below,
First temperature detecting means for directly detecting the temperature of the food in the cooking vessel, second temperature detecting means provided on the back side of a cooking plate on which the cooking vessel is placed, and the first detecting means and Temperature adjusting means for adjusting the output of the heat generating means in accordance with the detection output of the second temperature detecting means, wherein the output of either the first temperature detecting means or the second temperature detecting means is the temperature. A heating cooker that changes the output of the heat generating means when a predetermined set value set by the adjusting means is reached. 2. The cooking device according to claim 1, wherein the first temperature detecting means has a shape inserted into an installation hole provided in a side portion of the cooking vessel.